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        <h1 class="title">MyBatis与Spring的整合</h1>
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                <time datetime="2019-05-22T21:23:28.000Z" itemprop="datePublished" class="page-time">
  2019-05-22
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            <ol class="post-toc"><li class="post-toc-item post-toc-level-2"><a class="post-toc-link" href="#学习笔记-Spring与MyBatis整合"><span class="post-toc-number">1.</span> <span class="post-toc-text">学习笔记 : Spring与MyBatis整合</span></a><ol class="post-toc-child"><li class="post-toc-item post-toc-level-3"><a class="post-toc-link" href="#传统DAO方式的开发整合"><span class="post-toc-number">1.1.</span> <span class="post-toc-text">传统DAO方式的开发整合</span></a></li><li class="post-toc-item post-toc-level-3"><a class="post-toc-link" href="#Mapper接口方式的开发整合"><span class="post-toc-number">1.2.</span> <span class="post-toc-text">Mapper接口方式的开发整合</span></a></li></ol></li></ol>
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<article id="post-MyBatis与Spring的整合"
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        <h1 class="post-card-title">MyBatis与Spring的整合</h1>
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            <time class="post-time" title="2019-05-22 21:23:28" datetime="2019-05-22T21:23:28.000Z"  itemprop="datePublished">2019-05-22</time>

            


            

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            <h2 id="学习笔记-Spring与MyBatis整合"><a href="#学习笔记-Spring与MyBatis整合" class="headerlink" title="学习笔记 : Spring与MyBatis整合"></a>学习笔记 : Spring与MyBatis整合</h2><h3 id="传统DAO方式的开发整合"><a href="#传统DAO方式的开发整合" class="headerlink" title="传统DAO方式的开发整合"></a>传统DAO方式的开发整合</h3><p><em>简介 : 采用传统DAO开发方式进行MyBatis与Spring框架的整合时,需要编写DAO接口以及接口的实现类,<code>并且需要向DAO实现类中注入SqlSessionFactory</code>,然后通过SqlSessionFactory创建SqlSession. 下面通过一个使用客户id查询数据表中客户信息的案例来演示该开发方式.</em></p>
<ol>
<li><p><em>customer.sql : 客户信息表</em></p>
<figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment"># 客户信息表</span></span><br><span class="line"><span class="keyword">create</span> <span class="keyword">table</span> t_customer (</span><br><span class="line"></span><br><span class="line">	<span class="keyword">id</span> <span class="built_in">INT</span>(<span class="number">20</span>) PRIMARY <span class="keyword">KEY</span> AUTO_INCREMENT,</span><br><span class="line">	<span class="keyword">name</span> <span class="built_in">VARCHAR</span>(<span class="number">10</span>) <span class="keyword">NOT</span> <span class="literal">NULL</span>,</span><br><span class="line">	job <span class="built_in">VARCHAR</span>(<span class="number">10</span>) <span class="keyword">NOT</span> <span class="literal">NULL</span>,</span><br><span class="line">	phone <span class="built_in">VARCHAR</span>(<span class="number">12</span>) <span class="keyword">NOT</span> <span class="literal">NULL</span></span><br><span class="line">	</span><br><span class="line">)</span><br></pre></td></tr></table></figure>
</li>
<li><p><em>db.properties : 数据库配置文件</em></p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br></pre></td><td class="code"><pre><span class="line">#</span><br><span class="line">#database configuration information</span><br><span class="line">#</span><br><span class="line">jdbc.driver=com.mysql.cj.jdbc.Driver</span><br><span class="line">jdbc.url=jdbc:mysql:xxxxxx?useSSL=false&amp;serverTimezone=UTC&amp;allowPublicKeyRetrieval=true</span><br><span class="line">jdbc.username=xxxxxx</span><br><span class="line">jdbc.password=xxxxxx</span><br><span class="line">#</span><br><span class="line">#DBCP configuration</span><br><span class="line">#</span><br><span class="line">jdbc.maxTotal=30    #最大连接数</span><br><span class="line">jdbc.maxIdle=10     #最大空闲连接数</span><br><span class="line">jdbc.initialSize=5  #初始化连接数</span><br></pre></td></tr></table></figure>
</li>
<li><p><em>applicationContext.xml : Spring核心配置文件</em></p>
<figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">&lt;?xml version="1.0" encoding="UTF-8"?&gt;</span></span><br><span class="line"><span class="tag">&lt;<span class="name">beans</span> <span class="attr">xmlns</span>=<span class="string">"http://www.springframework.org/schema/beans"</span></span></span><br><span class="line"><span class="tag">	<span class="attr">xmlns:xsi</span>=<span class="string">"http://www.w3.org/2001/XMLSchema-instance"</span></span></span><br><span class="line"><span class="tag">	<span class="attr">xmlns:aop</span>=<span class="string">"http://www.springframework.org/schema/aop"</span></span></span><br><span class="line"><span class="tag">	<span class="attr">xmlns:tx</span>=<span class="string">"http://www.springframework.org/schema/tx"</span></span></span><br><span class="line"><span class="tag">	<span class="attr">xmlns:context</span>=<span class="string">"http://www.springframework.org/schema/context"</span></span></span><br><span class="line"><span class="tag">	<span class="attr">xsi:schemaLocation</span>=<span class="string">"http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd</span></span></span><br><span class="line"><span class="tag"><span class="string">		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd</span></span></span><br><span class="line"><span class="tag"><span class="string">		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd</span></span></span><br><span class="line"><span class="tag"><span class="string">		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd"</span>&gt;</span></span><br><span class="line"></span><br><span class="line">	<span class="comment">&lt;!-- 读取db.properties --&gt;</span></span><br><span class="line">	<span class="tag">&lt;<span class="name">context:property-placeholder</span> <span class="attr">location</span>=<span class="string">"classpath:db.properties"</span>/&gt;</span></span><br><span class="line">	<span class="comment">&lt;!-- 配置数据源 --&gt;</span></span><br><span class="line">	<span class="tag">&lt;<span class="name">bean</span> <span class="attr">id</span>=<span class="string">"dataSource"</span> <span class="attr">class</span>=<span class="string">"org.apache.commons.dbcp2.BasicDataSource"</span>&gt;</span></span><br><span class="line">		<span class="comment">&lt;!-- 数据库驱动 --&gt;</span></span><br><span class="line">		<span class="tag">&lt;<span class="name">property</span> <span class="attr">name</span>=<span class="string">"driverClassName"</span> <span class="attr">value</span>=<span class="string">"$&#123;jdbc.driver&#125;"</span>/&gt;</span></span><br><span class="line">		<span class="comment">&lt;!-- 连接数据库的url --&gt;</span></span><br><span class="line">		<span class="tag">&lt;<span class="name">property</span> <span class="attr">name</span>=<span class="string">"url"</span> <span class="attr">value</span>=<span class="string">"$&#123;jdbc.url&#125;"</span>/&gt;</span></span><br><span class="line">		<span class="comment">&lt;!-- 连接数据库的用户名 --&gt;</span></span><br><span class="line">		<span class="tag">&lt;<span class="name">property</span> <span class="attr">name</span>=<span class="string">"username"</span> <span class="attr">value</span>=<span class="string">"$&#123;jdbc.username&#125;"</span>/&gt;</span></span><br><span class="line">		<span class="comment">&lt;!-- 连接数据库的密码 --&gt;</span></span><br><span class="line">		<span class="tag">&lt;<span class="name">property</span> <span class="attr">name</span>=<span class="string">"password"</span> <span class="attr">value</span>=<span class="string">"$&#123;jdbc.password&#125;"</span>/&gt;</span></span><br><span class="line">		<span class="comment">&lt;!-- 最大连接数 --&gt;</span></span><br><span class="line">		<span class="tag">&lt;<span class="name">property</span> <span class="attr">name</span>=<span class="string">"maxTotal"</span> <span class="attr">value</span>=<span class="string">"$&#123;jdbc.maxTotal&#125;"</span>/&gt;</span></span><br><span class="line">		<span class="comment">&lt;!-- 最大空闲数 --&gt;</span></span><br><span class="line">		<span class="tag">&lt;<span class="name">property</span> <span class="attr">name</span>=<span class="string">"maxIdle"</span> <span class="attr">value</span>=<span class="string">"$&#123;jdbc.maxIdle&#125;"</span>/&gt;</span></span><br><span class="line">		<span class="comment">&lt;!-- 初始化连接数 --&gt;</span></span><br><span class="line">		<span class="tag">&lt;<span class="name">property</span> <span class="attr">name</span>=<span class="string">"initialSize"</span> <span class="attr">value</span>=<span class="string">"$&#123;jdbc.initialSize&#125;"</span>/&gt;</span></span><br><span class="line">	<span class="tag">&lt;/<span class="name">bean</span>&gt;</span></span><br><span class="line">	</span><br><span class="line">	<span class="comment">&lt;!-- 事务管理器,依赖于数据源 --&gt;</span></span><br><span class="line">	<span class="tag">&lt;<span class="name">bean</span> <span class="attr">id</span>=<span class="string">"transactionManager"</span> <span class="attr">class</span>=<span class="string">"org.springframework.jdbc.datasource.DataSourceTransactionManager"</span>&gt;</span></span><br><span class="line">		<span class="tag">&lt;<span class="name">property</span> <span class="attr">name</span>=<span class="string">"dataSource"</span> <span class="attr">ref</span>=<span class="string">"dataSource"</span>/&gt;</span></span><br><span class="line">	<span class="tag">&lt;/<span class="name">bean</span>&gt;</span></span><br><span class="line">	</span><br><span class="line">	<span class="comment">&lt;!-- 开启事务注解 --&gt;</span></span><br><span class="line">	<span class="tag">&lt;<span class="name">tx:annotation-driven</span> <span class="attr">transaction-manager</span>=<span class="string">"transactionManager"</span>/&gt;</span></span><br><span class="line">	</span><br><span class="line">	<span class="comment">&lt;!-- 配置MyBatis工厂: 构建SqlSessionFactory --&gt;</span></span><br><span class="line">	<span class="comment">&lt;!-- 指定数据源和配置文件: 使得Spring IOC容器在初始化id为sqlSessionFactory的Bean时解析MyBatis的配置文件,并与数据源一同保存到Spring的Bean中 --&gt;</span></span><br><span class="line">	<span class="tag">&lt;<span class="name">bean</span> <span class="attr">id</span>=<span class="string">"sqlSessionFactory"</span> <span class="attr">class</span>=<span class="string">"org.mybatis.spring.SqlSessionFactoryBean"</span>&gt;</span></span><br><span class="line">		<span class="comment">&lt;!-- 注入数据源 --&gt;</span></span><br><span class="line">		<span class="tag">&lt;<span class="name">property</span> <span class="attr">name</span>=<span class="string">"dataSource"</span> <span class="attr">ref</span>=<span class="string">"dataSource"</span>/&gt;</span></span><br><span class="line">		<span class="comment">&lt;!-- 指定核心配置文件位置 --&gt;</span></span><br><span class="line">		<span class="tag">&lt;<span class="name">property</span> <span class="attr">name</span>=<span class="string">"configLocation"</span> <span class="attr">value</span>=<span class="string">"classpath:mybatis-config.xml"</span>/&gt;</span></span><br><span class="line">	<span class="tag">&lt;/<span class="name">bean</span>&gt;</span></span><br><span class="line">	</span><br><span class="line">	<span class="comment">&lt;!-- 实例化Dao: 为SqlSessionDaoSupport类的子类对象注入一个SqlSessionFactory	--&gt;</span></span><br><span class="line">	<span class="tag">&lt;<span class="name">bean</span> <span class="attr">id</span>=<span class="string">"customerDao"</span> <span class="attr">class</span>=<span class="string">"pers.huangyuhui.sm.dao.impl.CustomerDaoImpl"</span>&gt;</span></span><br><span class="line">		<span class="tag">&lt;<span class="name">property</span> <span class="attr">name</span>=<span class="string">"sqlSessionFactory"</span> <span class="attr">ref</span>=<span class="string">"sqlSessionFactory"</span>/&gt;</span></span><br><span class="line">	<span class="tag">&lt;/<span class="name">bean</span>&gt;</span></span><br><span class="line"></span><br><span class="line"><span class="tag">&lt;/<span class="name">beans</span>&gt;</span></span><br></pre></td></tr></table></figure>
</li>
<li><p><em>mybatis-config.xml : MyBaits核心配置文件</em></p>
<figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">&lt;?xml version="1.0" encoding="UTF-8"?&gt;</span></span><br><span class="line"><span class="meta">&lt;!DOCTYPE <span class="meta-keyword">configuration</span> <span class="meta-keyword">PUBLIC</span> <span class="meta-string">"-//mybatis.org//DTD Config 3.0//EN"</span> <span class="meta-string">"http://mybatis.org/dtd/mybatis-3-config.dtd"</span>&gt;</span></span><br><span class="line"></span><br><span class="line"><span class="tag">&lt;<span class="name">configuration</span>&gt;</span></span><br><span class="line">	<span class="comment">&lt;!-- 配置别名 --&gt;</span></span><br><span class="line">	<span class="tag">&lt;<span class="name">typeAliases</span>&gt;</span></span><br><span class="line">		<span class="comment">&lt;!-- 通过扫描包的形式定义别名: mybatis会将所有该包中的POJO类以首字母小写的非限定类名来作为它的别名 --&gt;</span></span><br><span class="line">		<span class="tag">&lt;<span class="name">package</span> <span class="attr">name</span>=<span class="string">"pers.huangyuhui.sm.po"</span> /&gt;</span></span><br><span class="line">	<span class="tag">&lt;/<span class="name">typeAliases</span>&gt;</span></span><br><span class="line"></span><br><span class="line">	<span class="comment">&lt;!-- 配置Mapper配置 --&gt;</span></span><br><span class="line">	<span class="tag">&lt;<span class="name">mappers</span>&gt;</span></span><br><span class="line">		<span class="tag">&lt;<span class="name">mapper</span> <span class="attr">resource</span>=<span class="string">"pers/huangyuhui/sm/po/CustomerMapper.xml"</span> /&gt;</span></span><br><span class="line">	<span class="tag">&lt;/<span class="name">mappers</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">configuration</span>&gt;</span></span><br></pre></td></tr></table></figure>
</li>
<li><p><em>Customer.java : 持久层</em></p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> pers.huangyuhui.sm.po;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@ClassName</span>: Customer</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Description</span>: 客户信息</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@author</span>: HuangYuhui</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@date</span>: May 24, 2019 6:38:18 PM</span></span><br><span class="line"><span class="comment"> *</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">class</span> <span class="title">Customer</span> </span>&#123;</span><br><span class="line"></span><br><span class="line">	<span class="keyword">private</span> Integer id;</span><br><span class="line">	<span class="keyword">private</span> String name;</span><br><span class="line">	<span class="keyword">private</span> String job;</span><br><span class="line">	<span class="keyword">private</span> String phone;</span><br><span class="line"></span><br><span class="line">	<span class="function"><span class="keyword">public</span> Integer <span class="title">getId</span><span class="params">()</span> </span>&#123;</span><br><span class="line">		<span class="keyword">return</span> id;</span><br><span class="line">	&#125;</span><br><span class="line"></span><br><span class="line">	<span class="function"><span class="keyword">public</span> <span class="keyword">void</span> <span class="title">setId</span><span class="params">(Integer id)</span> </span>&#123;</span><br><span class="line">		<span class="keyword">this</span>.id = id;</span><br><span class="line">	&#125;</span><br><span class="line"></span><br><span class="line">	<span class="function"><span class="keyword">public</span> String <span class="title">getName</span><span class="params">()</span> </span>&#123;</span><br><span class="line">		<span class="keyword">return</span> name;</span><br><span class="line">	&#125;</span><br><span class="line"></span><br><span class="line">	<span class="function"><span class="keyword">public</span> <span class="keyword">void</span> <span class="title">setName</span><span class="params">(String name)</span> </span>&#123;</span><br><span class="line">		<span class="keyword">this</span>.name = name;</span><br><span class="line">	&#125;</span><br><span class="line"></span><br><span class="line">	<span class="function"><span class="keyword">public</span> String <span class="title">getJob</span><span class="params">()</span> </span>&#123;</span><br><span class="line">		<span class="keyword">return</span> job;</span><br><span class="line">	&#125;</span><br><span class="line"></span><br><span class="line">	<span class="function"><span class="keyword">public</span> <span class="keyword">void</span> <span class="title">setJob</span><span class="params">(String job)</span> </span>&#123;</span><br><span class="line">		<span class="keyword">this</span>.job = job;</span><br><span class="line">	&#125;</span><br><span class="line"></span><br><span class="line">	<span class="function"><span class="keyword">public</span> String <span class="title">getPhone</span><span class="params">()</span> </span>&#123;</span><br><span class="line">		<span class="keyword">return</span> phone;</span><br><span class="line">	&#125;</span><br><span class="line"></span><br><span class="line">	<span class="function"><span class="keyword">public</span> <span class="keyword">void</span> <span class="title">setPhone</span><span class="params">(String phone)</span> </span>&#123;</span><br><span class="line">		<span class="keyword">this</span>.phone = phone;</span><br><span class="line">	&#125;</span><br><span class="line"></span><br><span class="line">	<span class="meta">@Override</span></span><br><span class="line">	<span class="function"><span class="keyword">public</span> String <span class="title">toString</span><span class="params">()</span> </span>&#123;</span><br><span class="line">		<span class="keyword">return</span> <span class="string">"Customer [id="</span> + id + <span class="string">", name="</span> + name + <span class="string">", job="</span> + job + <span class="string">", phone="</span> + phone + <span class="string">"]"</span>;</span><br><span class="line">	&#125;</span><br><span class="line"></span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
</li>
<li><p><em>CustomerMapper.xml : 映射文件</em></p>
<figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">&lt;?xml version="1.0" encoding="UTF-8"?&gt;</span></span><br><span class="line"><span class="meta">&lt;!DOCTYPE <span class="meta-keyword">mapper</span> <span class="meta-keyword">PUBLIC</span> <span class="meta-string">"-//mybatis.org//DTD Mapper 3.0//EN"</span> <span class="meta-string">"http://mybatis.org/dtd/mybatis-3-mapper.dtd"</span>&gt;</span></span><br><span class="line"></span><br><span class="line"><span class="tag">&lt;<span class="name">mapper</span> <span class="attr">namespace</span>=<span class="string">"pers.huangyuhui.sm.po.CustomerMapper"</span>&gt;</span></span><br><span class="line">	<span class="comment">&lt;!-- 根据id查询客户信息,其中`customer`为Customer类的别名 --&gt;</span></span><br><span class="line">	<span class="tag">&lt;<span class="name">select</span> <span class="attr">id</span>=<span class="string">"findCustomerById"</span> <span class="attr">parameterType</span>=<span class="string">"Integer"</span>  <span class="attr">resultType</span>=<span class="string">"customer"</span>&gt;</span></span><br><span class="line">		select id,name,job,phone from t_customer where id = #&#123;id&#125;</span><br><span class="line">	<span class="tag">&lt;/<span class="name">select</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">mapper</span>&gt;</span></span><br></pre></td></tr></table></figure>
</li>
<li><p><em>CustomerDao.java : DAO层</em></p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> pers.huangyuhui.sm.dao;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> pers.huangyuhui.sm.po.Customer;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@ClassName</span>: CustomerDao</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Description</span>: TODO</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@author</span>: HuangYuhui</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@date</span>: May 24, 2019 6:52:30 PM</span></span><br><span class="line"><span class="comment"> *</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">interface</span> <span class="title">CustomerDao</span> </span>&#123;</span><br><span class="line"></span><br><span class="line">	<span class="comment">/**</span></span><br><span class="line"><span class="comment">	 * <span class="doctag">@Title</span>: findCustomerById</span></span><br><span class="line"><span class="comment">	 * <span class="doctag">@Description</span>: 根据id查找客户信息</span></span><br><span class="line"><span class="comment">	 * <span class="doctag">@param</span>: id</span></span><br><span class="line"><span class="comment">	 * <span class="doctag">@return</span>: Customer</span></span><br><span class="line"><span class="comment">	 */</span></span><br><span class="line">	<span class="function"><span class="keyword">public</span> Customer <span class="title">findCustomerById</span><span class="params">(Integer id)</span></span>;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
</li>
<li><p><em>CustomerDaoImpl.java : CustomerDao的实现类</em></p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> pers.huangyuhui.sm.dao.impl;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> org.mybatis.spring.support.SqlSessionDaoSupport;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> pers.huangyuhui.sm.dao.CustomerDao;</span><br><span class="line"><span class="keyword">import</span> pers.huangyuhui.sm.po.Customer;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@ClassName</span>: CustomerDaoImpl</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Description</span>: 实现操作客户信息接口</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@author</span>: HuangYuhui</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@date</span>: May 24, 2019 6:54:24 PM</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="comment">//注意:SqlSessionDaoSupport类在使用时需要一个SqlSessionFactory或一个SqlSessionTemplate对象,所以需要通过</span></span><br><span class="line"><span class="comment">//Spring给SqlSessionDaoSupport类的子类对象注入一个SqlSessionFactory或SqlSessionTemplate.这样,在子类中就</span></span><br><span class="line"><span class="comment">//能够调用SqlSessionDaoSupport类的getSqlSession()方法来获取SqlSession对象,并使用SqlSession对象中的方法!</span></span><br><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">class</span> <span class="title">CustomerDaoImpl</span> <span class="keyword">extends</span> <span class="title">SqlSessionDaoSupport</span> <span class="keyword">implements</span> <span class="title">CustomerDao</span> </span>&#123;</span><br><span class="line"></span><br><span class="line">	<span class="keyword">private</span> String mapperNamespace = <span class="string">"pers.huangyuhui.sm.po.CustomerMapper."</span>;</span><br><span class="line"></span><br><span class="line">	<span class="meta">@Override</span></span><br><span class="line">	<span class="comment">// 通过id查找客户信息</span></span><br><span class="line">	<span class="function"><span class="keyword">public</span> Customer <span class="title">findCustomerById</span><span class="params">(Integer id)</span> </span>&#123;</span><br><span class="line">		<span class="comment">// 调用SqlSessionDaoSupport类的getSqlSession()方法来获取SqlSession对象,并使用SqlSession对象中的方法!</span></span><br><span class="line">		<span class="keyword">return</span> <span class="keyword">this</span>.getSqlSession().selectOne(mapperNamespace + <span class="string">"findCustomerById"</span>, id);</span><br><span class="line">	&#125;</span><br><span class="line"></span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
</li>
</ol>
<p><em>在此步骤需要在Spring配置文件applicationContext.xml中编写实例化CustomerDaoImpl的配置(<code>已添加</code>),代码如下所示 :</em><br><figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="tag">&lt;<span class="name">bean</span> <span class="attr">id</span>=<span class="string">"customerDao"</span> <span class="attr">class</span>=<span class="string">"pers.huangyuhui.sm.dao.impl.CustomerDaoImpl"</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">property</span> <span class="attr">name</span>=<span class="string">"sqlSessionFactory"</span> <span class="attr">ref</span>=<span class="string">"sqlSessionFactory"</span>/&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">bean</span>&gt;</span></span><br></pre></td></tr></table></figure></p>
<ol start="9">
<li><p><em>SMTest.java : 整合测试类</em></p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> pers.huangyuhui.sm.test;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> org.junit.BeforeClass;</span><br><span class="line"><span class="keyword">import</span> org.junit.Test;</span><br><span class="line"><span class="keyword">import</span> org.springframework.context.ApplicationContext;</span><br><span class="line"><span class="keyword">import</span> org.springframework.context.support.ClassPathXmlApplicationContext;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> pers.huangyuhui.sm.dao.CustomerDao;</span><br><span class="line"><span class="keyword">import</span> pers.huangyuhui.sm.po.Customer;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@ClassName</span>: SMTest</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Description</span>: MyBatis+Spring整合测试</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@author</span>: HuangYuhui</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@date</span>: May 24, 2019 7:02:26 PM</span></span><br><span class="line"><span class="comment"> *</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">class</span> <span class="title">SMTest</span> </span>&#123;</span><br><span class="line"></span><br><span class="line">	<span class="keyword">private</span> <span class="keyword">static</span> ApplicationContext applicationContext;</span><br><span class="line"></span><br><span class="line">	<span class="meta">@BeforeClass</span></span><br><span class="line">	<span class="function"><span class="keyword">public</span> <span class="keyword">static</span> <span class="keyword">void</span> <span class="title">init</span><span class="params">()</span> </span>&#123;</span><br><span class="line">		applicationContext = <span class="keyword">new</span> ClassPathXmlApplicationContext(<span class="string">"applicationContext.xml"</span>);</span><br><span class="line">	&#125;</span><br><span class="line"></span><br><span class="line">	<span class="meta">@Test</span></span><br><span class="line">	<span class="function"><span class="keyword">public</span> <span class="keyword">void</span> <span class="title">findCustomerByIdTest</span><span class="params">()</span> </span>&#123;</span><br><span class="line">		<span class="comment">// CustomerDao customerDao = (CustomerDao) applicationContext.getBean("customerDao");</span></span><br><span class="line">		CustomerDao customerDao = (CustomerDao) applicationContext.getBean(CustomerDao<span class="class">.<span class="keyword">class</span>)</span>;</span><br><span class="line"></span><br><span class="line">		Customer customer = customerDao.findCustomerById(<span class="number">1</span>);</span><br><span class="line">		System.out.println(customer);</span><br><span class="line">	&#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
</li>
<li><p><em>log4j.properties : 日志文件</em></p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line">#Global configuration</span><br><span class="line">log4j.rootLogger=DEBUG,stdout</span><br><span class="line">#Log configuration</span><br><span class="line">log4j.logger.pers.huangyuhui.sm.test=TRACE</span><br><span class="line">#Console configuration</span><br><span class="line">log4j.appender.stdout=org.apache.log4j.ConsoleAppender</span><br><span class="line">log4j.appender.stdout.layout=org.apache.log4j.PatternLayout</span><br><span class="line">log4j.appender.stdout.layout.layout.ConversionPattern=%5p [%t] - %m%n</span><br></pre></td></tr></table></figure>
</li>
<li><p><em>程序运行结果</em></p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line">Fetching JDBC Connection from DataSource</span><br><span class="line">JDBC Connection [1334618867, URL=xxxxxx, MySQL Connector/J] will not be managed by Spring</span><br><span class="line"></span><br><span class="line">==&gt;  Preparing: select id,name,job,phone from t_customer where id = ? </span><br><span class="line">==&gt; Parameters: 1(Integer)</span><br><span class="line">&lt;==      Total: 1</span><br><span class="line"></span><br><span class="line">Closing non transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@15c25153]</span><br><span class="line">Returning JDBC Connection to DataSource</span><br><span class="line">Customer [id=1, name=YUbuntu0109, job=student, phone=15111111111]</span><br></pre></td></tr></table></figure>
</li>
</ol>
<h3 id="Mapper接口方式的开发整合"><a href="#Mapper接口方式的开发整合" class="headerlink" title="Mapper接口方式的开发整合"></a>Mapper接口方式的开发整合</h3><p>. . .</p>

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